CONTRIBUTORS
author blanchet
Fri Feb 21 00:09:56 2014 +0100 (2014-02-21)
changeset 55642 63beb38e9258
parent 55316 885500f4aa6a
child 55895 74a2758dcbae
permissions -rw-r--r--
adapted to renaming of datatype 'cases' and 'recs' to 'case' and 'rec'
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For the purposes of the license agreement in the file COPYRIGHT, a
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'contributor' is anybody who is listed in this file (CONTRIBUTORS) or
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who is listed as an author in one of the source files of this Isabelle
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distribution.
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Contributions to this Isabelle version
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--------------------------------------
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* January 2014: Lars Hupel, TUM
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  An improved, interactive simplifier trace with integration into the
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  Isabelle/jEdit Prover IDE.
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Contributions to Isabelle2013-1
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-------------------------------
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* September 2013: Lars Noschinski, TUM
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  Conversion between function definitions as list of equations and
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  case expressions in HOL.
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  New library Simps_Case_Conv with commands case_of_simps,
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  simps_of_case.
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* September 2013: Nik Sultana, University of Cambridge
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  Improvements to HOL/TPTP parser and import facilities.
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* September 2013: Johannes Hölzl and Dmitriy Traytel, TUM
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  New "coinduction" method (residing in HOL-BNF) to avoid boilerplate.
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* Summer 2013: Makarius Wenzel, Université Paris-Sud / LRI
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  Improvements of Isabelle/Scala and Isabelle/jEdit Prover IDE.
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* Summer 2013: Manuel Eberl, TUM
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  Generation of elimination rules in the function package.
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  New command "fun_cases".
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* Summer 2013: Christian Sternagel, JAIST
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  Improved support for ad hoc overloading of constants, including
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  documentation and examples.
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* Spring and Summer 2013: Lorenz Panny, Dmitriy Traytel, and
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  Jasmin Blanchette, TUM
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  Various improvements to BNF-based (co)datatype package, including
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  "primrec_new" and "primcorec" commands and a compatibility layer.
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* Spring and Summer 2013: Ondrej Kuncar, TUM
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  Various improvements of Lifting and Transfer packages.
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* Spring 2013: Brian Huffman, Galois Inc.
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  Improvements of the Transfer package.
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* Summer 2013: Daniel Kühlwein, ICIS, Radboud University Nijmegen
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  Jasmin Blanchette, TUM
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  Various improvements to MaSh, including a server mode.
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* First half of 2013: Steffen Smolka, TUM
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  Further improvements to Sledgehammer's Isar proof generator.
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* May 2013: Florian Haftmann, TUM
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  Ephemeral interpretation in local theories.
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* May 2013: Lukas Bulwahn and Nicolai Schaffroth, TUM
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  Spec_Check: A Quickcheck tool for Isabelle/ML.
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* April 2013: Stefan Berghofer, secunet Security Networks AG
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  Dmitriy Traytel, TUM
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  Makarius Wenzel, Université Paris-Sud / LRI
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  Case translations as a separate check phase independent of the
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  datatype package.
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* March 2013: Florian Haftmann, TUM
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  Reform of "big operators" on sets.
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* March 2013: Florian Haftmann, TUM
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  Algebraic locale hierarchy for orderings and (semi)lattices.
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* February 2013: Florian Haftmann, TUM
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  Reworking and consolidation of code generation for target language
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  numerals.
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* February 2013: Florian Haftmann, TUM
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  Sieve of Eratosthenes.
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Contributions to Isabelle2013
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-----------------------------
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* 2012: Makarius Wenzel, Université Paris-Sud / LRI
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  Improvements of Isabelle/Scala and Isabelle/jEdit Prover IDE.
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* Fall 2012: Daniel Kühlwein, ICIS, Radboud University Nijmegen
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  Jasmin Blanchette, TUM
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  Implemented Machine Learning for Sledgehammer (MaSh).
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* Fall 2012: Steffen Smolka, TUM
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  Various improvements to Sledgehammer's Isar proof generator,
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  including a smart type annotation algorithm and proof shrinking.
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* December 2012: Alessandro Coglio, Kestrel
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  Contributions to HOL's Lattice library.
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* November 2012: Fabian Immler, TUM
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  "Symbols" dockable for Isabelle/jEdit.
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* November 2012: Fabian Immler, TUM
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  Proof of the Daniell-Kolmogorov theorem: the existence of the limit
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  of projective families.
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Andreas@49770
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* October 2012: Andreas Lochbihler, KIT
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  Efficient construction of red-black trees from sorted associative
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  lists.
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* September 2012: Florian Haftmann, TUM
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  Lattice instances for type option.
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* September 2012: Christian Sternagel, JAIST
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  Consolidated HOL/Library (theories: Prefix_Order, Sublist, and
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  Sublist_Order) w.r.t. prefixes, suffixes, and embedding on lists.
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* August 2012: Dmitriy Traytel, Andrei Popescu, Jasmin Blanchette, TUM
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  New BNF-based (co)datatype package.
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* August 2012: Andrei Popescu and Dmitriy Traytel, TUM
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  Theories of ordinals and cardinals.
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* July 2012: Makarius Wenzel, Université Paris-Sud / LRI
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  Advanced support for Isabelle sessions and build management, notably
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  "isabelle build".
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* June 2012: Felix Kuperjans, Lukas Bulwahn, TUM and Rafal Kolanski, NICTA
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  Simproc for rewriting set comprehensions into pointfree expressions.
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* May 2012: Andreas Lochbihler, KIT
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  Theory of almost everywhere constant functions.
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* 2010-2012: Markus Kaiser and Lukas Bulwahn, TUM
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  Graphview in Scala/Swing.
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Contributions to Isabelle2012
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-----------------------------
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* April 2012: Johannes Hölzl, TUM
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  Probability: Introduced type to represent measures instead of
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  locales.
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* April 2012: Johannes Hölzl, Fabian Immler, TUM
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  Float: Moved to Dyadic rationals to represent floating point numers.
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* April 2012: Thomas Sewell, NICTA and
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  2010: Sascha Boehme, TUM
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  Theory HOL/Word/WordBitwise: logic/circuit expansion of bitvector
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  equalities/inequalities.
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* March 2012: Christian Sternagel, JAIST
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  Consolidated theory of relation composition.
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* March 2012: Nik Sultana, University of Cambridge
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  HOL/TPTP parser and import facilities.
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* March 2012: Cezary Kaliszyk, University of Innsbruck and
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  Alexander Krauss, QAware GmbH
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  Faster and more scalable Import mechanism for HOL Light proofs.
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* January 2012: Florian Haftmann, TUM, et al.
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  (Re-)Introduction of the "set" type constructor.
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* 2012: Ondrej Kuncar, TUM
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  New package Lifting, various improvements and refinements to the
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  Quotient package.
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* 2011/2012: Jasmin Blanchette, TUM
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  Various improvements to Sledgehammer, notably: tighter integration
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  with SPASS, support for more provers (Alt-Ergo, iProver,
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  iProver-Eq).
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* 2011/2012: Makarius Wenzel, Université Paris-Sud / LRI
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  Various refinements of local theory infrastructure.
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  Improvements of Isabelle/Scala layer and Isabelle/jEdit Prover IDE.
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Contributions to Isabelle2011-1
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-------------------------------
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* September 2011: Peter Gammie
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  Theory HOL/Library/Saturated: numbers with saturated arithmetic.
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* August 2011: Florian Haftmann, Johannes Hölzl and Lars Noschinski, TUM
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  Refined theory on complete lattices.
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* August 2011: Brian Huffman, Portland State University
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  Miscellaneous cleanup of Complex_Main and Multivariate_Analysis.
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* June 2011: Brian Huffman, Portland State University
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  Proof method "countable_datatype" for theory Library/Countable.
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* 2011: Jasmin Blanchette, TUM
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  Various improvements to Sledgehammer, notably: use of sound
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  translations, support for more provers (Waldmeister, LEO-II,
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  Satallax). Further development of Nitpick and 'try' command.
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* 2011: Andreas Lochbihler, Karlsruhe Institute of Technology
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  Theory HOL/Library/Cset_Monad allows do notation for computable sets
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  (cset) via the generic monad ad-hoc overloading facility.
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* 2011: Johannes Hölzl, Armin Heller, TUM and
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  Bogdan Grechuk, University of Edinburgh
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  Theory HOL/Library/Extended_Reals: real numbers extended with plus
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  and minus infinity.
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* 2011: Makarius Wenzel, Université Paris-Sud / LRI
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  Various building blocks for Isabelle/Scala layer and Isabelle/jEdit
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  Prover IDE.
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huffman@44908
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Contributions to Isabelle2011
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-----------------------------
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* January 2011: Stefan Berghofer, secunet Security Networks AG
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  HOL-SPARK: an interactive prover back-end for SPARK.
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* October 2010: Bogdan Grechuk, University of Edinburgh
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  Extended convex analysis in Multivariate Analysis.
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* October 2010: Dmitriy Traytel, TUM
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  Coercive subtyping via subtype constraints.
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* October 2010: Alexander Krauss, TUM
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  Command partial_function for function definitions based on complete
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  partial orders in HOL.
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* September 2010: Florian Haftmann, TUM
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  Refined concepts for evaluation, i.e., normalization of terms using
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  different techniques.
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* September 2010: Florian Haftmann, TUM
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  Code generation for Scala.
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* August 2010: Johannes Hoelzl, Armin Heller, and Robert Himmelmann, TUM
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  Improved Probability theory in HOL.
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* July 2010: Florian Haftmann, TUM
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  Reworking and extension of the Imperative HOL framework.
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* July 2010: Alexander Krauss, TUM and Christian Sternagel, University
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    of Innsbruck
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  Ad-hoc overloading. Generic do notation for monads.
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wenzelm@37383
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wenzelm@37144
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Contributions to Isabelle2009-2
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-------------------------------
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krauss@37303
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* 2009/2010: Stefan Berghofer, Alexander Krauss, and Andreas Schropp, TUM,
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  Makarius Wenzel, TUM / LRI
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  Elimination of type classes from proof terms.
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* April 2010: Florian Haftmann, TUM
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  Reorganization of abstract algebra type classes.
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* April 2010: Florian Haftmann, TUM
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  Code generation for data representations involving invariants;
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  various collections avaiable in theories Fset, Dlist, RBT,
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  Mapping and AssocList.
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* March 2010: Sascha Boehme, TUM
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  Efficient SHA1 library for Poly/ML.
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* February 2010: Cezary Kaliszyk and Christian Urban, TUM
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  Quotient type package for Isabelle/HOL.
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Contributions to Isabelle2009-1
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-------------------------------
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* November 2009, Brian Huffman, PSU
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  New definitional domain package for HOLCF.
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* November 2009: Robert Himmelmann, TUM
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  Derivation and Brouwer's fixpoint theorem in Multivariate Analysis.
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* November 2009: Stefan Berghofer and Lukas Bulwahn, TUM
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  A tabled implementation of the reflexive transitive closure.
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* November 2009: Lukas Bulwahn, TUM
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  Predicate Compiler: a compiler for inductive predicates to
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  equational specifications.
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* November 2009: Sascha Boehme, TUM and Burkhart Wolff, LRI Paris
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  HOL-Boogie: an interactive prover back-end for Boogie and VCC.
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* October 2009: Jasmin Blanchette, TUM
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  Nitpick: yet another counterexample generator for Isabelle/HOL.
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* October 2009: Sascha Boehme, TUM
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  Extension of SMT method: proof-reconstruction for the SMT solver Z3.
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* October 2009: Florian Haftmann, TUM
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  Refinement of parts of the HOL datatype package.
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boehmes@33010
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* October 2009: Florian Haftmann, TUM
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  Generic term styles for term antiquotations.
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* September 2009: Thomas Sewell, NICTA
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  More efficient HOL/record implementation.
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boehmes@32618
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* September 2009: Sascha Boehme, TUM
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  SMT method using external SMT solvers.
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* September 2009: Florian Haftmann, TUM
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  Refinement of sets and lattices.
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* July 2009: Jeremy Avigad and Amine Chaieb
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  New number theory.
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* July 2009: Philipp Meyer, TUM
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  HOL/Library/Sum_Of_Squares: functionality to call a remote csdp
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  prover.
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* July 2009: Florian Haftmann, TUM
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  New quickcheck implementation using new code generator.
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* July 2009: Florian Haftmann, TUM
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  HOL/Library/Fset: an explicit type of sets; finite sets ready to use
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  for code generation.
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* June 2009: Florian Haftmann, TUM
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  HOL/Library/Tree: search trees implementing mappings, ready to use
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  for code generation.
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* March 2009: Philipp Meyer, TUM
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  Minimization tool for results from Sledgehammer.
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Philipp@32268
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Contributions to Isabelle2009
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-----------------------------
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* March 2009: Robert Himmelmann, TUM and Amine Chaieb, University of
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  Cambridge
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  Elementary topology in Euclidean space.
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* March 2009: Johannes Hoelzl, TUM
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  Method "approximation", which proves real valued inequalities by
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  computation.
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* February 2009: Filip Maric, Univ. of Belgrade
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  A Serbian theory.
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* February 2009: Jasmin Christian Blanchette, TUM
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  Misc cleanup of HOL/refute.
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* February 2009: Timothy Bourke, NICTA
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  New find_consts command.
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* February 2009: Timothy Bourke, NICTA
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  "solves" criterion for find_theorems and auto_solve option
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* December 2008: Clemens Ballarin, TUM
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  New locale implementation.
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* December 2008: Armin Heller, TUM and Alexander Krauss, TUM
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  Method "sizechange" for advanced termination proofs.
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* November 2008: Timothy Bourke, NICTA
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  Performance improvement (factor 50) for find_theorems.
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haftmann@29398
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* 2008: Florian Haftmann, TUM
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  Various extensions and restructurings in HOL, improvements
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  in evaluation mechanisms, new module binding.ML for name bindings.
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* October 2008: Fabian Immler, TUM
wenzelm@28604
   369
  ATP manager for Sledgehammer, based on ML threads instead of Posix
wenzelm@28604
   370
  processes.  Additional ATP wrappers, including remote SystemOnTPTP
wenzelm@28604
   371
  services.
wenzelm@28604
   372
wenzelm@30162
   373
* September 2008: Stefan Berghofer, TUM and Marc Bezem, Univ. Bergen
wenzelm@30162
   374
  Prover for coherent logic.
wenzelm@30162
   375
wenzelm@28474
   376
* August 2008: Fabian Immler, TUM
wenzelm@28474
   377
  Vampire wrapper script for remote SystemOnTPTP service.
wenzelm@28474
   378
wenzelm@28474
   379
wenzelm@28474
   380
Contributions to Isabelle2008
wenzelm@28474
   381
-----------------------------
wenzelm@28474
   382
wenzelm@27009
   383
* 2007/2008:
wenzelm@27009
   384
  Alexander Krauss, TUM and Florian Haftmann, TUM and Stefan Berghofer, TUM
wenzelm@27009
   385
  HOL library improvements.
wenzelm@25468
   386
wenzelm@27009
   387
* 2007/2008: Brian Huffman, PSU
wenzelm@27009
   388
  HOLCF library improvements.
wenzelm@27009
   389
wenzelm@27009
   390
* 2007/2008: Stefan Berghofer, TUM
wenzelm@30179
   391
  HOL-Nominal package improvements.
wenzelm@27009
   392
wenzelm@27009
   393
* March 2008: Markus Reiter, TUM
wenzelm@27009
   394
  HOL/Library/RBT: red-black trees.
haftmann@26728
   395
wenzelm@26874
   396
* February 2008: Alexander Krauss, TUM and Florian Haftmann, TUM and
wenzelm@26874
   397
  Lukas Bulwahn, TUM and John Matthews, Galois:
wenzelm@26874
   398
  HOL/Library/Imperative_HOL: Haskell-style imperative data structures
wenzelm@26874
   399
  for HOL.
haftmann@26728
   400
wenzelm@27009
   401
* December 2007: Norbert Schirmer, Uni Saarbruecken
wenzelm@27009
   402
  Misc improvements of record package in HOL.
wenzelm@27009
   403
wenzelm@27009
   404
* December 2007: Florian Haftmann, TUM
wenzelm@27009
   405
  Overloading and class instantiation target.
wenzelm@27009
   406
wenzelm@27009
   407
* December 2007: Florian Haftmann, TUM
wenzelm@27009
   408
  New version of primrec package for local theories.
wenzelm@27009
   409
wenzelm@27009
   410
* December 2007: Alexander Krauss, TUM
wenzelm@27009
   411
  Method "induction_scheme" in HOL.
wenzelm@27009
   412
wenzelm@27009
   413
* November 2007: Peter Lammich, Uni Muenster
wenzelm@27009
   414
  HOL-Lattice: some more lemmas.
wenzelm@26198
   415
wenzelm@26874
   416
wenzelm@25454
   417
Contributions to Isabelle2007
wenzelm@25454
   418
-----------------------------
wenzelm@23252
   419
schirmer@25409
   420
* October 2007: Norbert Schirmer, TUM / Uni Saarbruecken
wenzelm@25398
   421
  State Spaces: The Locale Way (in HOL).
wenzelm@25398
   422
wenzelm@25057
   423
* October 2007: Mark A. Hillebrand, DFKI
wenzelm@25057
   424
  Robust sub/superscripts in LaTeX document output.
wenzelm@25057
   425
wenzelm@24799
   426
* August 2007: Jeremy Dawson, NICTA and Paul Graunke, Galois and Brian
wenzelm@24799
   427
    Huffman, PSU and Gerwin Klein, NICTA and John Matthews, Galois
kleing@24333
   428
  HOL-Word: a library for fixed-size machine words in Isabelle.
kleing@24333
   429
kleing@24332
   430
* August 2007: Brian Huffman, PSU
wenzelm@24799
   431
  HOL/Library/Boolean_Algebra and HOL/Library/Numeral_Type.
kleing@24332
   432
wenzelm@23252
   433
* June 2007: Amine Chaieb, TUM
wenzelm@24799
   434
  Semiring normalization and Groebner Bases.
wenzelm@25449
   435
  Support for dense linear orders.
wenzelm@17866
   436
paulson@23449
   437
* June 2007: Joe Hurd, Oxford
wenzelm@24799
   438
  Metis theorem-prover.
wenzelm@24799
   439
wenzelm@24799
   440
* 2007: Kong W. Susanto, Cambridge
wenzelm@24799
   441
  HOL: Metis prover integration.
paulson@23449
   442
wenzelm@24799
   443
* 2007: Stefan Berghofer, TUM
wenzelm@25449
   444
  HOL: inductive predicates and sets.
wenzelm@24799
   445
wenzelm@24803
   446
* 2007: Norbert Schirmer, TUM
wenzelm@24803
   447
  HOL/record: misc improvements.
wenzelm@24803
   448
wenzelm@24799
   449
* 2006/2007: Alexander Krauss, TUM
wenzelm@24799
   450
  HOL: function package and related theories on termination.
paulson@23449
   451
haftmann@22449
   452
* 2006/2007: Florian Haftmann, TUM
haftmann@22449
   453
  Pure: generic code generator framework.
haftmann@22449
   454
  Pure: class package.
wenzelm@24799
   455
  HOL: theory reorganization, code generator setup.
wenzelm@24799
   456
wenzelm@25449
   457
* 2006/2007: Christian Urban, TUM and Stefan Berghofer, TUM and
wenzelm@25449
   458
    Julien Narboux, TUM
wenzelm@24799
   459
  HOL/Nominal package and related tools.
haftmann@22449
   460
wenzelm@21242
   461
* November 2006: Lukas Bulwahn, TUM
wenzelm@24799
   462
  HOL: method "lexicographic_order" for function package.
wenzelm@21242
   463
wenzelm@21169
   464
* October 2006: Stefan Hohe, TUM
wenzelm@21169
   465
  HOL-Algebra: ideals and quotients over rings.
wenzelm@21169
   466
wenzelm@20340
   467
* August 2006: Amine Chaieb, TUM
wenzelm@20340
   468
  Experimental support for generic reflection and reification in HOL.
wenzelm@20340
   469
kleing@20067
   470
* July 2006: Rafal Kolanski, NICTA
kleing@20067
   471
  Hex (0xFF) and binary (0b1011) numerals.
kleing@20067
   472
nipkow@19896
   473
* May 2006: Klaus Aehlig, LMU
nipkow@19896
   474
  Command 'normal_form': normalization by evaluation.
nipkow@19896
   475
wenzelm@19650
   476
* May 2006: Amine Chaieb, TUM
wenzelm@19650
   477
  HOL-Complex: Ferrante and Rackoff Algorithm for linear real
wenzelm@19650
   478
  arithmetic.
kleing@19470
   479
kleing@19470
   480
* February 2006: Benjamin Porter, NICTA
kleing@23382
   481
  HOL and HOL-Complex: generalised mean value theorem, continuum is
kleing@19470
   482
  not denumerable, harmonic and arithmetic series, and denumerability
kleing@19470
   483
  of rationals.
wenzelm@17532
   484
wenzelm@19650
   485
* October 2005: Martin Wildmoser, TUM
wenzelm@19650
   486
  Sketch for Isar 'guess' element.
wenzelm@19650
   487
wenzelm@19650
   488
wenzelm@25454
   489
Contributions to Isabelle2005
wenzelm@25454
   490
-----------------------------
wenzelm@17382
   491
wenzelm@17640
   492
* September 2005: Lukas Bulwahn and Bernhard Haeupler, TUM
wenzelm@17640
   493
  HOL-Complex: Formalization of Taylor series.
wenzelm@17640
   494
wenzelm@17640
   495
* September 2005: Stephan Merz, Alwen Tiu, QSL Loria
wenzelm@17640
   496
  Components for SAT solver method using zChaff.
wenzelm@17640
   497
wenzelm@17534
   498
* September 2005: Ning Zhang and Christian Urban, LMU Munich
wenzelm@17534
   499
  A Chinese theory.
wenzelm@17534
   500
wenzelm@17562
   501
* September 2005: Bernhard Haeupler, TUM
wenzelm@17382
   502
  Method comm_ring for proving equalities in commutative rings.
wenzelm@16892
   503
wenzelm@17532
   504
* July/August 2005: Jeremy Avigad, Carnegie Mellon University
wenzelm@16892
   505
  Various improvements of the HOL and HOL-Complex library.
wenzelm@16868
   506
wenzelm@16892
   507
* July 2005: Florian Zuleger, Johannes Hoelzl, and Simon Funke, TUM
wenzelm@16892
   508
  Some structured proofs about completeness of real numbers.
wenzelm@16892
   509
wenzelm@17532
   510
* May 2005: Rafal Kolanski and Gerwin Klein, NICTA
wenzelm@17532
   511
  Improved retrieval of facts from theory/proof context.
wenzelm@15994
   512
wenzelm@16252
   513
* February 2005: Lucas Dixon, University of Edinburgh
wenzelm@17532
   514
  Improved subst method.
wenzelm@17532
   515
wenzelm@17532
   516
* 2005: Brian Huffman, OGI
wenzelm@17532
   517
  Various improvements of HOLCF.
wenzelm@17532
   518
  Some improvements of the HOL-Complex library.
wenzelm@17532
   519
wenzelm@17532
   520
* 2005: Claire Quigley and Jia Meng, University of Cambridge
wenzelm@17532
   521
  Some support for asynchronous communication with external provers
wenzelm@17532
   522
  (experimental).
wenzelm@17532
   523
wenzelm@17532
   524
* 2005: Florian Haftmann, TUM
wenzelm@17543
   525
  Contributions to document 'sugar'.
wenzelm@17532
   526
  Various ML combinators, notably linear functional transformations.
wenzelm@17532
   527
  Some cleanup of ML legacy.
wenzelm@17532
   528
  Additional antiquotations.
wenzelm@17532
   529
  Improved Isabelle web site.
wenzelm@17532
   530
wenzelm@17532
   531
* 2004/2005: David Aspinall, University of Edinburgh
wenzelm@17532
   532
  Various elements of XML and PGIP based communication with user
wenzelm@17532
   533
  interfaces (experimental).
wenzelm@17532
   534
wenzelm@17532
   535
* 2004/2005: Gerwin Klein, NICTA
wenzelm@17532
   536
  Contributions to document 'sugar'.
wenzelm@17532
   537
  Improved Isabelle web site.
wenzelm@17532
   538
  Improved HTML presentation of theories.
wenzelm@17532
   539
wenzelm@17532
   540
* 2004/2005: Clemens Ballarin, TUM
wenzelm@17532
   541
  Provers: tools for transitive relations and quasi orders.
wenzelm@17532
   542
  Improved version of locales, notably interpretation of locales.
wenzelm@17532
   543
  Improved version of HOL-Algebra.
wenzelm@17532
   544
wenzelm@17532
   545
* 2004/2005: Amine Chaieb, TUM
wenzelm@17532
   546
  Improved version of HOL presburger method.
wenzelm@17532
   547
wenzelm@17532
   548
* 2004/2005: Steven Obua, TUM
wenzelm@17532
   549
  Improved version of HOL/Import, support for HOL-Light.
wenzelm@17532
   550
  Improved version of HOL-Complex-Matrix.
wenzelm@17572
   551
  Pure/defs: more sophisticated checks on well-formedness of overloading.
wenzelm@17543
   552
  Pure/Tools: an experimental evaluator for lambda terms.
wenzelm@17532
   553
wenzelm@17532
   554
* 2004/2005: Norbert Schirmer, TUM
wenzelm@17532
   555
  Contributions to document 'sugar'.
wenzelm@17532
   556
  Improved version of HOL/record.
wenzelm@17532
   557
wenzelm@17532
   558
* 2004/2005: Sebastian Skalberg, TUM
wenzelm@17532
   559
  Improved version of HOL/Import.
wenzelm@17532
   560
  Some internal ML reorganizations.
wenzelm@17532
   561
wenzelm@17532
   562
* 2004/2005: Tjark Weber, TUM
wenzelm@17640
   563
  SAT solver method using zChaff.
wenzelm@17532
   564
  Improved version of HOL/refute.